out of the large EVP_DigestInit(3). No text change.
-.\" $OpenBSD: EVP_DigestInit.3,v 1.29 2023/08/27 15:33:08 schwarze Exp $
+.\" $OpenBSD: EVP_DigestInit.3,v 1.30 2023/09/07 14:22:11 schwarze Exp $
.\" full merge up to: OpenSSL 7f572e95 Dec 2 13:57:04 2015 +0000
.\" selective merge up to: OpenSSL 24a535ea Sep 22 13:14:20 2020 +0100
.\"
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd $Mdocdate: August 27 2023 $
+.Dd $Mdocdate: September 7 2023 $
.Dt EVP_DIGESTINIT 3
.Os
.Sh NAME
.Nm EVP_MD_CTX_create ,
.Nm EVP_MD_CTX_cleanup ,
.Nm EVP_MD_CTX_destroy ,
-.Nm EVP_MD_CTX_ctrl ,
-.Nm EVP_MD_CTX_set_flags ,
-.Nm EVP_MD_CTX_clear_flags ,
-.Nm EVP_MD_CTX_test_flags ,
.Nm EVP_DigestInit_ex ,
.Nm EVP_DigestUpdate ,
.Nm EVP_DigestFinal_ex ,
.Nm EVP_DigestFinal ,
.Nm EVP_MD_CTX_copy ,
.Nm EVP_MAX_MD_SIZE ,
-.Nm EVP_MD_type ,
-.Nm EVP_MD_pkey_type ,
-.Nm EVP_MD_size ,
-.Nm EVP_MD_block_size ,
-.Nm EVP_MD_flags ,
.Nm EVP_MD_CTX_md ,
-.Nm EVP_MD_CTX_size ,
-.Nm EVP_MD_CTX_block_size ,
-.Nm EVP_MD_CTX_type ,
-.Nm EVP_MD_CTX_md_data ,
-.Nm EVP_MD_CTX_pkey_ctx ,
-.Nm EVP_MD_CTX_set_pkey_ctx ,
.Nm EVP_md_null ,
.Nm EVP_sha224 ,
.Nm EVP_sha256 ,
.Fa "EVP_MD_CTX *ctx"
.Fc
.Ft int
-.Fo EVP_MD_CTX_ctrl
-.Fa "EVP_MD_CTX *ctx"
-.Fa "int command"
-.Fa "int p1"
-.Fa "void* p2"
-.Fc
-.Ft void
-.Fo EVP_MD_CTX_set_flags
-.Fa "EVP_MD_CTX *ctx"
-.Fa "int flags"
-.Fc
-.Ft void
-.Fo EVP_MD_CTX_clear_flags
-.Fa "EVP_MD_CTX *ctx"
-.Fa "int flags"
-.Fc
-.Ft int
-.Fo EVP_MD_CTX_test_flags
-.Fa "const EVP_MD_CTX *ctx"
-.Fa "int flags"
-.Fc
-.Ft int
.Fo EVP_DigestInit_ex
.Fa "EVP_MD_CTX *ctx"
.Fa "const EVP_MD *type"
.Fa "EVP_MD_CTX *in"
.Fc
.Fd #define EVP_MAX_MD_SIZE 64 /* SHA512 */
-.Ft int
-.Fo EVP_MD_type
-.Fa "const EVP_MD *md"
-.Fc
-.Ft int
-.Fo EVP_MD_pkey_type
-.Fa "const EVP_MD *md"
-.Fc
-.Ft int
-.Fo EVP_MD_size
-.Fa "const EVP_MD *md"
-.Fc
-.Ft int
-.Fo EVP_MD_block_size
-.Fa "const EVP_MD *md"
-.Fc
-.Ft unsigned long
-.Fo EVP_MD_flags
-.Fa "const EVP_MD *md"
-.Fc
.Ft const EVP_MD *
.Fo EVP_MD_CTX_md
.Fa "const EVP_MD_CTX *ctx"
.Fc
-.Ft int
-.Fo EVP_MD_CTX_size
-.Fa "const EVP_MD_CTX *ctx"
-.Fc
-.Ft int
-.Fo EVP_MD_CTX_block_size
-.Fa "const EVP_MD_CTX *ctx"
-.Fc
-.Ft int
-.Fo EVP_MD_CTX_type
-.Fa "const EVP_MD_CTX *ctx"
-.Fc
-.Ft void *
-.Fo EVP_MD_CTX_md_data
-.Fa "const EVP_MD_CTX *ctx"
-.Fc
-.Ft EVP_PKEY_CTX *
-.Fo EVP_MD_CTX_pkey_ctx
-.Fa "const EVP_MD_CTX *ctx"
-.Fc
-.Ft void
-.Fo EVP_MD_CTX_set_pkey_ctx
-.Fa "EVP_MD_CTX *ctx"
-.Fa "EVP_PKEY_CTX *pctx"
-.Fc
.Ft const EVP_MD *
.Fn EVP_md_null void
.Ft const EVP_MD *
.Fn EVP_MD_CTX_free ,
respectively.
.Pp
-.Fn EVP_MD_CTX_ctrl
-performs the digest-specific control
-.Fa command
-with the command-specific arguments
-.Fa p1
-and
-.Fa p2
-on
-.Fa ctx ,
-which needs to already be set up with
-.Fn EVP_DigestInit_ex
-before calling this function.
-Other restrictions may apply depending on the control
-.Fa command
-and digest implementation.
-.Pp
-If the
-.Fa command
-is
-.Dv EVP_MD_CTRL_MICALG ,
-.Fa p1
-is ignored and
-.Fa p2
-is an output argument of the type
-.Fa "char **p2" .
-A string specifying the digest Message Integrity Check algorithm
-is allocated and a pointer to this string is returned in
-.Pf * Fa p2 .
-It is the responsibility of the caller to
-.Xr free 3
-.Pf * Fa p2
-when it is no longer needed.
-This
-.Fa command
-is used by
-.Xr SMIME_write_ASN1 3
-when creating S/MIME multipart/signed messages as specified in RFC 3851.
-.Pp
-.Fn EVP_MD_CTX_set_flags
-sets and
-.Fn EVP_MD_CTX_clear_flags
-clears all the flag bits in
-.Fa ctx
-that are set in the
-.Fa flags
-argument.
-.Fn EVP_MD_CTX_test_flags
-tests which of the flag bits that are set in the
-.Fa flags
-argument are also set in
-.Fa ctx .
-Possible flag bits are:
-.Bl -tag -width Ds -offset 2n
-.It Dv EVP_MD_CTX_FLAG_NO_INIT
-Instruct
-.Fn EVP_DigestInit_ex
-and functions calling it not to initialise the internal data
-that is specific to the digest method and its implementation.
-.It Dv EVP_MD_CTX_FLAG_ONESHOT
-Instruct the digest to optimize for one update only, if possible.
-For digest algorithms built into the library, this flag usually
-has no effect.
-.El
-.Pp
.Fn EVP_DigestInit_ex
sets up the digest context
.Fa ctx
before a context that was already used can be passed as
.Fa out .
.Pp
-.Fn EVP_MD_size
-and
-.Fn EVP_MD_CTX_size
-return the size of the message digest when passed an
-.Vt EVP_MD
-or an
-.Vt EVP_MD_CTX
-structure, i.e. the size of the hash.
-.Pp
-.Fn EVP_MD_block_size
-and
-.Fn EVP_MD_CTX_block_size
-return the block size of the message digest when passed an
-.Vt EVP_MD
-or an
-.Vt EVP_MD_CTX
-structure.
-.Pp
-.Fn EVP_MD_type
-and
-.Fn EVP_MD_CTX_type
-return the NID of the OBJECT IDENTIFIER representing the message digest.
-For example
-.Fn EVP_MD_type EVP_sha512()
-returns
-.Dv NID_sha512 .
-These functions are normally used when setting ASN.1 OIDs.
-.Pp
-.Fn EVP_MD_CTX_md_data
-returns the digest method private data of
-.Fa ctx .
-The space was allocated and its size set with
-.Xr EVP_MD_meth_set_app_datasize 3 .
-.Pp
-.Fn EVP_MD_flags
-returns the
-.Fa md
-flags.
-These are different from the
-.Vt EVP_MD_CTX
-ones.
-See
-.Xr EVP_MD_meth_set_flags 3
-for more information.
-.Pp
-.Fn EVP_MD_pkey_type
-returns the NID of the public key signing algorithm associated with this
-digest.
-For example
-.Fn EVP_sha512
-is associated with RSA so this will return
-.Dv NID_sha512WithRSAEncryption .
-Since digests and signature algorithms are no longer linked, this
-function is only retained for compatibility reasons.
-.Pp
-.Fn EVP_MD_CTX_pkey_ctx
-returns the
-.Vt EVP_PKEY_CTX
-assigned to
-.Fa ctx .
-The returned pointer should not be freed by the caller.
-.Pp
-.Fn EVP_MD_CTX_set_pkey_ctx
-assigns
-.Fa pctx
-to
-.Fa ctx .
-This is normally used to provide a customized
-.Vt EVP_PKEY_CTX
-to
-.Xr EVP_DigestSignInit 3
-or
-.Xr EVP_DigestVerifyInit 3 .
-The caller retains ownership of the
-.Fa pctx
-passed to this function and is responsible for freeing it
-when it is no longer needed.
-.Pp
-If the
-.Fa ctx
-already contains a
-.Vt EVP_PKEY_CTX
-when this function is called, that old
-.Vt EVP_PKEY_CTX
-is freed if it was created internally, but if it was also installed with
-.Fn EVP_MD_CTX_set_pkey_ctx ,
-the pointer to the old
-.Vt EVP_PKEY_CTX
-is merely replaced by the new pointer and ownership of the old
-.Vt EVP_PKEY_CTX
-remains with the previous caller.
-.Pp
-Passing a
-.Dv NULL
-pointer for the
-.Fa pctx
-argument is also allowed.
-In that case, any
-.Vt EVP_PKEY_CTX
-already assigned to
-.Fa ctx
-is dissociated from it as described above, but no new
-.Vt EVP_PKEY_CTX
-is assigned.
-.Pp
.Fn EVP_sha224 ,
.Fn EVP_sha256 ,
.Fn EVP_sha384 ,
structure when passed a digest name, a digest NID, or an ASN1_OBJECT
structure respectively.
.Pp
-.Fn EVP_MD_CTX_size ,
-.Fn EVP_MD_CTX_block_size ,
-.Fn EVP_MD_CTX_type ,
-.Fn EVP_get_digestbynid ,
+.Fn EVP_get_digestbynid
and
.Fn EVP_get_digestbyobj
are implemented as macros.
.Fn EVP_MD_CTX_cleanup
always return 1.
.Pp
-.Fn EVP_MD_CTX_ctrl ,
.Fn EVP_DigestInit_ex ,
.Fn EVP_DigestUpdate ,
.Fn EVP_DigestFinal_ex ,
.Fn EVP_MD_CTX_copy
return 1 for success or 0 for failure.
.Pp
-.Fn EVP_MD_CTX_test_flags
-returns the bitwise OR of the
-.Fa flags
-argument and the flags set in
-.Fa ctx .
-.Pp
-.Fn EVP_MD_type ,
-.Fn EVP_MD_pkey_type ,
-and
-.Fn EVP_MD_CTX_type
-return the NID of the corresponding OBJECT IDENTIFIER or
-.Dv NID_undef
-if none exists.
-.Pp
-.Fn EVP_MD_size ,
-.Fn EVP_MD_block_size ,
-.Fn EVP_MD_CTX_size ,
-and
-.Fn EVP_MD_CTX_block_size
-return the digest or block size in bytes.
-.Pp
.Fn EVP_MD_CTX_md
returns the
.Vt EVP_MD
.Xr EVP_BytesToKey 3 ,
.Xr EVP_DigestSignInit 3 ,
.Xr EVP_DigestVerifyInit 3 ,
+.Xr EVP_MD_CTX_ctrl 3 ,
.Xr EVP_MD_meth_new 3 ,
+.Xr EVP_MD_nid 3 ,
.Xr EVP_PKEY_CTX_set_signature_md 3 ,
.Xr EVP_PKEY_meth_set_signctx 3 ,
.Xr EVP_sha1 3 ,
and
.Dv EVP_MAX_MD_SIZE
first appeared in SSLeay 0.5.1.
-.Fn EVP_MD_size
-first appeared in SSLeay 0.6.6.
-.Fn EVP_MD_CTX_size ,
-.Fn EVP_MD_CTX_type ,
-.Fn EVP_md_null ,
+.Fn EVP_md_null
and
.Fn EVP_get_digestbyname
first appeared in SSLeay 0.8.0.
-.Fn EVP_MD_type ,
-.Fn EVP_MD_pkey_type ,
-.Fn EVP_get_digestbynid ,
+.Fn EVP_get_digestbynid
and
.Fn EVP_get_digestbyobj
first appeared in SSLeay 0.8.1.
-.Fn EVP_MD_block_size ,
-.Fn EVP_MD_CTX_size ,
-.Fn EVP_MD_CTX_block_size ,
-and
.Fn EVP_ripemd160
first appeared in SSLeay 0.9.0.
All these functions have been available since
.Fn EVP_MD_CTX_create ,
.Fn EVP_MD_CTX_cleanup ,
.Fn EVP_MD_CTX_destroy ,
-.Fn EVP_MD_CTX_set_flags ,
-.Fn EVP_MD_CTX_clear_flags ,
-.Fn EVP_MD_CTX_test_flags ,
.Fn EVP_DigestInit_ex ,
.Fn EVP_DigestFinal_ex ,
.Fn EVP_Digest ,
and have been available since
.Ox 4.0 .
.Pp
-.Fn EVP_MD_flags
-first appeared in OpenSSL 1.0.0
-and has been available since
-.Ox 4.9 .
-.Pp
-.Fn EVP_MD_CTX_ctrl
-first appeared in OpenSSL 1.1.0 and has been available since
-.Ox 5.7 .
-.Pp
.Fn EVP_MD_CTX_new ,
.Fn EVP_MD_CTX_reset ,
and
first appeared in OpenSSL 1.1.0 and have been available since
.Ox 6.3 .
.Pp
-.Fn EVP_MD_CTX_md_data
-and
-.Fn EVP_MD_CTX_pkey_ctx
-first appeared in OpenSSL 1.1.0 and
-.Fn EVP_MD_CTX_set_pkey_ctx
-in OpenSSL 1.1.1.
-These functions have been available since
-.Ox 7.1 .
-.Pp
.Fn EVP_sha512_224
and
.Fn EVP_sha512_256
--- /dev/null
+.\" $OpenBSD: EVP_MD_CTX_ctrl.3,v 1.1 2023/09/07 14:22:11 schwarze Exp $
+.\" full merge up to: OpenSSL man3/EVP_DigestInit.pod
+.\" 24a535ea Sep 22 13:14:20 2020 +0100
+.\"
+.\" This file is a derived work.
+.\" The changes are covered by the following Copyright and license:
+.\"
+.\" Copyright (c) 2023 Ingo Schwarze <schwarze@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\" The original file was written by Richard Levitte <levitte@openssl.org>,
+.\" Todd Short <tshort@akamai.com>, Paul Yang <yang.yang@baishancloud.com>,
+.\" and Antoine Salon <asalon@vmware.com>.
+.\" Copyright (c) 2015, 2016, 2018, 2019 The OpenSSL Project.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\"
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\"
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in
+.\" the documentation and/or other materials provided with the
+.\" distribution.
+.\"
+.\" 3. All advertising materials mentioning features or use of this
+.\" software must display the following acknowledgment:
+.\" "This product includes software developed by the OpenSSL Project
+.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+.\"
+.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+.\" endorse or promote products derived from this software without
+.\" prior written permission. For written permission, please contact
+.\" openssl-core@openssl.org.
+.\"
+.\" 5. Products derived from this software may not be called "OpenSSL"
+.\" nor may "OpenSSL" appear in their names without prior written
+.\" permission of the OpenSSL Project.
+.\"
+.\" 6. Redistributions of any form whatsoever must retain the following
+.\" acknowledgment:
+.\" "This product includes software developed by the OpenSSL Project
+.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+.\" OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd $Mdocdate: September 7 2023 $
+.Dt EVP_MD_CTX_CTRL 3
+.Os
+.Sh NAME
+.Nm EVP_MD_CTX_ctrl ,
+.Nm EVP_MD_CTX_set_flags ,
+.Nm EVP_MD_CTX_clear_flags ,
+.Nm EVP_MD_CTX_test_flags ,
+.Nm EVP_MD_CTX_pkey_ctx ,
+.Nm EVP_MD_CTX_set_pkey_ctx ,
+.Nm EVP_MD_CTX_md_data
+.Nd configure EVP message digest contexts
+.Sh SYNOPSIS
+.In openssl/evp.h
+.Ft int
+.Fo EVP_MD_CTX_ctrl
+.Fa "EVP_MD_CTX *ctx"
+.Fa "int command"
+.Fa "int p1"
+.Fa "void* p2"
+.Fc
+.Ft void
+.Fo EVP_MD_CTX_set_flags
+.Fa "EVP_MD_CTX *ctx"
+.Fa "int flags"
+.Fc
+.Ft void
+.Fo EVP_MD_CTX_clear_flags
+.Fa "EVP_MD_CTX *ctx"
+.Fa "int flags"
+.Fc
+.Ft int
+.Fo EVP_MD_CTX_test_flags
+.Fa "const EVP_MD_CTX *ctx"
+.Fa "int flags"
+.Fc
+.Ft EVP_PKEY_CTX *
+.Fo EVP_MD_CTX_pkey_ctx
+.Fa "const EVP_MD_CTX *ctx"
+.Fc
+.Ft void
+.Fo EVP_MD_CTX_set_pkey_ctx
+.Fa "EVP_MD_CTX *ctx"
+.Fa "EVP_PKEY_CTX *pctx"
+.Fc
+.Ft void *
+.Fo EVP_MD_CTX_md_data
+.Fa "const EVP_MD_CTX *ctx"
+.Fc
+.Sh DESCRIPTION
+.Fn EVP_MD_CTX_ctrl
+performs the digest-specific control
+.Fa command
+with the command-specific arguments
+.Fa p1
+and
+.Fa p2
+on
+.Fa ctx ,
+which needs to already be set up with
+.Xr EVP_DigestInit_ex 3
+before calling this function.
+Other restrictions may apply depending on the control
+.Fa command
+and digest implementation.
+.Pp
+If the
+.Fa command
+is
+.Dv EVP_MD_CTRL_MICALG ,
+.Fa p1
+is ignored and
+.Fa p2
+is an output argument of the type
+.Fa "char **p2" .
+A string specifying the digest Message Integrity Check algorithm
+is allocated and a pointer to this string is returned in
+.Pf * Fa p2 .
+It is the responsibility of the caller to
+.Xr free 3
+.Pf * Fa p2
+when it is no longer needed.
+This
+.Fa command
+is used by
+.Xr SMIME_write_ASN1 3
+when creating S/MIME multipart/signed messages as specified in RFC 3851.
+.Pp
+.Fn EVP_MD_CTX_set_flags
+sets and
+.Fn EVP_MD_CTX_clear_flags
+clears all the flag bits in
+.Fa ctx
+that are set in the
+.Fa flags
+argument.
+.Fn EVP_MD_CTX_test_flags
+tests which of the flag bits that are set in the
+.Fa flags
+argument are also set in
+.Fa ctx .
+Possible flag bits are:
+.Bl -tag -width Ds -offset 2n
+.It Dv EVP_MD_CTX_FLAG_NO_INIT
+Instruct
+.Xr EVP_DigestInit_ex 3
+and functions calling it not to initialise the internal data
+that is specific to the digest method and its implementation.
+.It Dv EVP_MD_CTX_FLAG_ONESHOT
+Instruct the digest to optimize for one update only, if possible.
+For digest algorithms built into the library, this flag usually
+has no effect.
+.El
+.Pp
+.Fn EVP_MD_CTX_pkey_ctx
+returns the
+.Vt EVP_PKEY_CTX
+assigned to
+.Fa ctx .
+The returned pointer should not be freed by the caller.
+.Pp
+.Fn EVP_MD_CTX_set_pkey_ctx
+assigns
+.Fa pctx
+to
+.Fa ctx .
+This is normally used to provide a customized
+.Vt EVP_PKEY_CTX
+to
+.Xr EVP_DigestSignInit 3
+or
+.Xr EVP_DigestVerifyInit 3 .
+The caller retains ownership of the
+.Fa pctx
+passed to this function and is responsible for freeing it
+when it is no longer needed.
+.Pp
+If the
+.Fa ctx
+already contains a
+.Vt EVP_PKEY_CTX
+when this function is called, that old
+.Vt EVP_PKEY_CTX
+is freed if it was created internally, but if it was also installed with
+.Fn EVP_MD_CTX_set_pkey_ctx ,
+the pointer to the old
+.Vt EVP_PKEY_CTX
+is merely replaced by the new pointer and ownership of the old
+.Vt EVP_PKEY_CTX
+remains with the previous caller.
+.Pp
+Passing a
+.Dv NULL
+pointer for the
+.Fa pctx
+argument is also allowed.
+In that case, any
+.Vt EVP_PKEY_CTX
+already assigned to
+.Fa ctx
+is dissociated from it as described above, but no new
+.Vt EVP_PKEY_CTX
+is assigned.
+.Pp
+.Fn EVP_MD_CTX_md_data
+returns the digest method private data of
+.Fa ctx .
+The space was allocated and its size set with
+.Xr EVP_MD_meth_set_app_datasize 3 .
+.Sh RETURN VALUES
+.Fn EVP_MD_CTX_ctrl
+returns 1 for success or 0 for failure.
+.Pp
+.Fn EVP_MD_CTX_test_flags
+returns the bitwise OR of the
+.Fa flags
+argument and the flags set in
+.Fa ctx .
+.Sh SEE ALSO
+.Xr evp 3 ,
+.Xr EVP_DigestInit 3 ,
+.Xr EVP_MD_meth_new 3 ,
+.Xr EVP_MD_nid 3
+.Sh HISTORY
+.Fn EVP_MD_CTX_set_flags ,
+.Fn EVP_MD_CTX_clear_flags ,
+and
+.Fn EVP_MD_CTX_test_flags ,
+first appeared in OpenSSL 0.9.7 and have been available since
+.Ox 3.2 .
+.Pp
+.Fn EVP_MD_CTX_ctrl
+first appeared in OpenSSL 1.1.0 and has been available since
+.Ox 5.7 .
+.Pp
+.Fn EVP_MD_CTX_pkey_ctx
+and
+.Fn EVP_MD_CTX_md_data
+first appeared in OpenSSL 1.1.0 and
+.Fn EVP_MD_CTX_set_pkey_ctx
+in OpenSSL 1.1.1.
+These functions have been available since
+.Ox 7.1 .
--- /dev/null
+.\" $OpenBSD: EVP_MD_nid.3,v 1.1 2023/09/07 14:22:11 schwarze Exp $
+.\" full merge up to: OpenSSL man3/EVP_DigestInit.pod
+.\" 24a535ea Sep 22 13:14:20 2020 +0100
+.\"
+.\" This file is a derived work.
+.\" The changes are covered by the following Copyright and license:
+.\"
+.\" Copyright (c) 2023 Ingo Schwarze <schwarze@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\" The original file was written by Dr. Stephen Henson <steve@openssl.org>
+.\" and Antoine Salon <asalon@vmware.com>.
+.\" Copyright (c) 2000, 2012, 2019 The OpenSSL Project.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\"
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\"
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in
+.\" the documentation and/or other materials provided with the
+.\" distribution.
+.\"
+.\" 3. All advertising materials mentioning features or use of this
+.\" software must display the following acknowledgment:
+.\" "This product includes software developed by the OpenSSL Project
+.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+.\"
+.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+.\" endorse or promote products derived from this software without
+.\" prior written permission. For written permission, please contact
+.\" openssl-core@openssl.org.
+.\"
+.\" 5. Products derived from this software may not be called "OpenSSL"
+.\" nor may "OpenSSL" appear in their names without prior written
+.\" permission of the OpenSSL Project.
+.\"
+.\" 6. Redistributions of any form whatsoever must retain the following
+.\" acknowledgment:
+.\" "This product includes software developed by the OpenSSL Project
+.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+.\" OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd $Mdocdate: September 7 2023 $
+.Dt EVP_MD_TYPE 3
+.Os
+.Sh NAME
+.Nm EVP_MD_type ,
+.Nm EVP_MD_CTX_type ,
+.Nm EVP_MD_size ,
+.Nm EVP_MD_CTX_size ,
+.Nm EVP_MD_block_size ,
+.Nm EVP_MD_CTX_block_size ,
+.Nm EVP_MD_flags ,
+.Nm EVP_MD_pkey_type
+.Nd inspect EVP_MD objects
+.Sh SYNOPSIS
+.In openssl/evp.h
+.Ft int
+.Fo EVP_MD_type
+.Fa "const EVP_MD *md"
+.Fc
+.Ft int
+.Fo EVP_MD_CTX_type
+.Fa "const EVP_MD_CTX *ctx"
+.Fc
+.Ft int
+.Fo EVP_MD_size
+.Fa "const EVP_MD *md"
+.Fc
+.Ft int
+.Fo EVP_MD_CTX_size
+.Fa "const EVP_MD_CTX *ctx"
+.Fc
+.Ft int
+.Fo EVP_MD_block_size
+.Fa "const EVP_MD *md"
+.Fc
+.Ft int
+.Fo EVP_MD_CTX_block_size
+.Fa "const EVP_MD_CTX *ctx"
+.Fc
+.Ft unsigned long
+.Fo EVP_MD_flags
+.Fa "const EVP_MD *md"
+.Fc
+.Ft int
+.Fo EVP_MD_pkey_type
+.Fa "const EVP_MD *md"
+.Fc
+.Sh DESCRIPTION
+.Fn EVP_MD_type
+and
+.Fn EVP_MD_CTX_type
+return the NID of the OBJECT IDENTIFIER representing the message digest.
+For example
+.Fn EVP_MD_type EVP_sha512()
+returns
+.Dv NID_sha512 .
+These functions are normally used when setting ASN.1 OIDs.
+.Pp
+.Fn EVP_MD_size
+and
+.Fn EVP_MD_CTX_size
+return the size of the message digest when passed an
+.Vt EVP_MD
+or an
+.Vt EVP_MD_CTX
+structure, i.e. the size of the hash.
+.Pp
+.Fn EVP_MD_block_size
+and
+.Fn EVP_MD_CTX_block_size
+return the block size of the message digest when passed an
+.Vt EVP_MD
+or an
+.Vt EVP_MD_CTX
+structure.
+.Pp
+.Fn EVP_MD_flags
+returns the
+.Fa md
+flags.
+These are different from the
+.Vt EVP_MD_CTX
+ones.
+See
+.Xr EVP_MD_meth_set_flags 3
+for more information.
+.Pp
+.Fn EVP_MD_pkey_type
+returns the NID of the public key signing algorithm associated with this
+digest.
+For example
+.Fn EVP_sha512
+is associated with RSA so this will return
+.Dv NID_sha512WithRSAEncryption .
+Since digests and signature algorithms are no longer linked, this
+function is only retained for compatibility reasons.
+.Pp
+.Fn EVP_MD_CTX_size ,
+.Fn EVP_MD_CTX_block_size ,
+and
+.Fn EVP_MD_CTX_type
+are implemented as macros.
+.Sh RETURN VALUES
+.Fn EVP_MD_type ,
+.Fn EVP_MD_CTX_type ,
+and
+.Fn EVP_MD_pkey_type
+return the NID of the corresponding OBJECT IDENTIFIER or
+.Dv NID_undef
+if none exists.
+.Pp
+.Fn EVP_MD_size ,
+.Fn EVP_MD_CTX_size ,
+.Fn EVP_MD_block_size ,
+and
+.Fn EVP_MD_CTX_block_size
+return the digest or block size in bytes.
+.Sh SEE ALSO
+.Xr evp 3 ,
+.Xr EVP_DigestInit 3 ,
+.Xr EVP_MD_CTX_ctrl 3
+.Sh HISTORY
+.Fn EVP_MD_size
+first appeared in SSLeay 0.6.6,
+.Fn EVP_MD_CTX_size
+and
+.Fn EVP_MD_CTX_type
+in SSLeay 0.8.0,
+.Fn EVP_MD_type
+and
+.Fn EVP_MD_pkey_type
+in SSLeay 0.8.1, and
+.Fn EVP_MD_block_size
+and
+.Fn EVP_MD_CTX_block_size
+in SSLeay 0.9.0.
+All these functions have been available since
+.Ox 2.4 .
+.Pp
+.Fn EVP_MD_flags
+first appeared in OpenSSL 1.0.0
+and has been available since
+.Ox 4.9 .
-# $OpenBSD: Makefile,v 1.266 2023/08/31 17:27:41 schwarze Exp $
+# $OpenBSD: Makefile,v 1.267 2023/09/07 14:22:11 schwarze Exp $
.include <bsd.own.mk>
EVP_DigestVerifyInit.3 \
EVP_EncodeInit.3 \
EVP_EncryptInit.3 \
+ EVP_MD_CTX_ctrl.3 \
EVP_MD_meth_new.3 \
+ EVP_MD_nid.3 \
EVP_OpenInit.3 \
EVP_PKCS82PKEY.3 \
EVP_PKEY_CTX_ctrl.3 \
-.\" $OpenBSD: evp.3,v 1.22 2023/08/31 17:27:41 schwarze Exp $
+.\" $OpenBSD: evp.3,v 1.23 2023/09/07 14:22:11 schwarze Exp $
.\" full merge up to: OpenSSL man7/evp 24a535ea Sep 22 13:14:20 2020 +0100
.\"
.\" This file was written by Ulf Moeller <ulf@openssl.org>,
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd $Mdocdate: August 31 2023 $
+.Dd $Mdocdate: September 7 2023 $
.Dt EVP 3
.Os
.Sh NAME
.Xr EVP_DigestVerifyInit 3 ,
.Xr EVP_EncodeInit 3 ,
.Xr EVP_EncryptInit 3 ,
+.Xr EVP_MD_CTX_ctrl 3 ,
.Xr EVP_MD_meth_new 3 ,
+.Xr EVP_MD_nid 3 ,
.Xr EVP_OpenInit 3 ,
.Xr EVP_PKCS82PKEY 3 ,
.Xr EVP_PKEY_add1_attr 3 ,
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